Finding the Fourth Proportional to 8,076,827.84, 12,128,954.16 and 5,398,365.20
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Solution
The fourth proportional to 8,076,827.84, 12,128,954.16 and 5,398,365.20 is: 8,106,712.85
Step by Step Solution
- Step 1: Write the proportion equation
8,076,827.84 : 12,128,954.16 = 5,398,365.20 : x - Step 2: Convert to fraction form
8,076,827.84/12,128,954.16 = 5,398,365.20/x - Step 3: Cross multiply
8,076,827.84x = 12,128,954.16 × 5,398,365.20 - Step 4: Simplify right side
8,076,827.84x = 65,476,524,049,739.23 - Step 5: Solve for x
x = 65,476,524,049,739.23/8,076,827.84 - Step 6: Final answer
x = 8,106,712.85
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.